2006/07/31 by Claudio Conti, Luca Angelani, Giancarlo Ruocco
Engineering · Physics and Astronomy · #Photonic Crystal and Fiber Optics #Quantum optics and atomic interactions #Random lasers and scattering media #cond-mat.dis-nn #cond-mat.soft #nlin.PS #physics.optics
paper · pdf · doi:10.1103/physreva.75.033812
published as Phys. Rev. A 75, 033812 (2007) · 5 pages, 4 figures. Revised version with new figure 4 with localized states
arxiv created 2006/11/09 · openalex publication_date 2007/03/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
By using a three-dimensional finite-difference time-domain parallel code, the linear and nonlinear propagation of light pulses in a disordered assembly of scatterers, generated by a molecular dynamics code, is simulated. We calculate the static and dynamical light diffusion constant and the transmission in the presence of localized states. We numerically demonstrate the ``modulational instability random laser'': at high input peak power, energy is transferred to localized states from the input pulse, resulting in a power-dependent nonexponential time decay of the transmitted pulse.